1. EU Energy and Transport Figures, Statistical pocketbook 2002, European Commission, ISSN 1225-1095.
2. Kyoto Protocol. http://unfccc.int/resource/docs/convkp/kpeng.pdf, 1997.
3. Energy for the Future: Renewable Sources of Energy—White Paper for a Community Strategy and Action Plan; COM(97)599 final (26/11/1997); http://europa.eu.int/comm/energy/library/599fi_en.pdf.
4. Green Paper, Towards a European strategy for the security of energy supply; COM 769 final (29/11/00); http://europa.eu.int/comm/energy_transport/doc-principal/pubfinal_en.pdf, 2000.
5. Stipulated in Articles 2 and 6 of the Amsterdam Treaty on the European Union; http://europa.eu.int/eur-lex/en/treaties/dat/EU_consol.pdf, 1997